Process for making sound-records.



F. L. DYER. PROCESS FOR MAKING SOUND RECORDS. APPLICATION FILED mm 5, 1909.

. 1 021,973- Patented Apr. 2, 191 2.

y ]f f 5; 22555 1 17' UNITED STATES PATENT ()'FFIC E;-

FRANK L. DYER, or MONTCILAIR, NEwJERsnY, nssrenon, BY MESNE ASSIGNMENTS,

T0 THOMAS .A. nmsoN, INCORPORATED, 01? WEST ORANGE, NEW JERSEY, A COR- rom'rron or NEwuEasEY.

' rnocrss FOR'MAKIN SOUND-RECORDS.

Specification 0,! Letters Patent.

Patented Apr. 2, 1912.

. Application fi1edJune5', 1909. Serial No. 500,414.

To all whom it may concern Be it known that I, FRANK L. DYER, a

citizen of; the United States, residing at Montclair, in the county of Essex and State of New Jersey, have invented a certain new and useful Process for Making Sound-Records, of which the following is a description.

My invention relates to phonograph rec-'- ords and more particularly to processes for manufacturing the same, and my object is to provide an inexpensive and efficient form of record in a novel and efiicient manner. My invention is an improvement on the invention disclosed in an application of Jonas W. Aylsworth, filed June 5, 1909,

Serial Number 500,415, entitled Phonograph records and methods of making the nected prime mover.

same, myinvention differing in certain de- My improvement is particularly directed to the provision of a secure connection between the outer or record film and the inner or backing cylinder.

Other objects will be evident from the following specification and appended claim.

Attention is hereby directed to. the accompanying drawing, forming part of this specification and representing 'a vertical longitudinal section through a form of apparatus in which my improved'p'rocess may be carried out, a record being shown in position therein.

Referring to the drawing, the spindle 1, which is preferably mounted in a vertical position, may be rotated in any desired man ner, as by a direct connected or belt coni The tube 2, is molinted co-axially with the spindle 1, and preferably is, integrally formed therewith. "Also, preferably a pouring tube 3, which may be formed integral with the tube 2, or otherwise fixed thereto, is provided Within the said tube 2. This pouring tube 3 is of greatly reduced diameter, so that centrifugal action within it may not be suflicient to overcome gravity of. the record material poured therein, and thereby cause the production of a record film on the bore of the said tube. The spindle 1 is provided with a horizontal surface 4 on which the cylindrical record mold 5 may be seated. The tube 6, which may be formed of wood. pulp, or other inexpensive substance suitable for forming a backing for a record cylinder, is'

mounted in; position upon a tube 2, before the mold 5 1s placed in position. The outer surface of the tube 2 is refer-ably tapered and the wood pulp tube 6 is cylindrical, but

is, however, provided -with a plurality of annular ribs, as 7 and 8, on its bore, these ribs being of such diameters as to fit snugly upon the tube 2, when the wood pulp tube 6 taperingsurface of the tube 2-and the inner cylindrical bore of the mold 5. A plurality of passages 12 are provided through the tube 2 immediatelyabove the bottom of the said tubeand below the point at which the pouring tube 3 is fixed to the bore of the tube 2. The inner tube 6 of the record is also provided with a plurality of passages 13, extending therethrough, by which the record material introduced into the pouring tube 3 and passing thence through passages 12 into chamber 11, may pass through the inner tube 6 into the annular space between the outer circumference thereof and the bore of the mold 5. The inner tube 6 is also provided with a plurality of recesses in the outer circumference thereof, or passages therethrough as 14, in which the record material flows to some extent during the formation of the record, to firmly bind the inner and outer layers of the record to; her. The inner tube (3 is also provided near its upper end with passages 15 extending therethrough, and the tube 2 is provided with passages 16 therethrough, adjacent said passages 15. i

Then the parts are assembled with the mold 5 mounted in position on the horizontal surface 4 of the spindle, the parts may be clamped together by any suitable means.

' ring 17.

terial passes through passages 12 and 13,

and rises under centrifugal action to fill all the space between the outer surface of tube 6 and the bore of mold 5, air being driven ahead of the rising column of record material through passages 15, and through openings 14, if these extend completely through the inner tube 6.- The amount of material introduced into pouring tube 3 is limited and is just suflicient to fill the space designed therefor, with small amounts of the record materialprojecting into the passages 13, 14 and 15, in the inner tube 6. When the outer layer has been sufliciently hardened in any desired manner, the composite record comprising the inner and outer tubes joined together, may be extracted from the mold in any desired manner.

Having now described my invention, what ters Patent is as follows The process of forming cylindrical sound records, consisting in causing a thin layer of suitable fluid. record material to form centrifugally within a cylindrical mold and around a backing of cheaper material, and to join firmly to the latter by flowing into recesses therein, hardening the record material, and removing the. complete composite record from the mold, substantially as described.

This specification signed and witnessed this 4th day of June 1909.

FRANK L. DYER.

Witnesses Dr'nn SMITH, JOHN M.- CANFIELD.

I claim as new and desire to secure by Let- 

